Portable subcutaneous injection pump medicine storage injection device

Abstract

The utility model relates to a portable subcutaneous injection pump medicine storage injection device which comprises a medicine storage chamber and an injection assembly which are connected through a connecting hose. The injection assembly comprises a guide steel needle, an indwelling hose and a fixing seat, the fixing seat comprises an inner fixing seat and an outer fixing seat which are sleeved inside and outside, the guide cylinder seat and the soft needle seat are arranged in the outer fixing seat and arranged at the top of the inner fixing seat in a sleeved mode, liquid inlet holes which are communicated with each other are formed in the inner fixing seat and the outer fixing seat, and the liquid inlet holes are communicated with an inner cavity of the connecting hose. According to the injection assembly, the indwelling hose is fixed through the inner fixing seat and the outer fixing seat which are sleeved inside and outside, the structure that the inner fixing seat and the outer fixing seat are sleeved inside and outside makes full use of space, the structure is compact, miniaturization of the whole injection pump is facilitated, the fixing seats can fully occupy an inner cavity of the indwelling hose seat, liquid medicine residues are reduced, and waste is reduced. The use cost of a patient is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to an injection device, in particular to a portable subcutaneous injection pump medicine storage injection device. BACKGROUND

[0002] The injection pump can inject medicine into the body accurately, slightly, uniformly and continuously, can satisfy the frequent injection of corresponding medicine in a long time, and can satisfy the stability and health of the body to keep corresponding functions, so the injection pump is widely applied.

[0003] In order to improve the quality of life of patients and satisfy the demand of injecting medicine at any time and anywhere, a portable subcutaneous injection pump with small size, convenient carrying and simple operation is developed. Utility model content

[0004] The utility model discloses a portable subcutaneous injection pump medicine storage injection device, which can provide a basis for the miniaturization and operation of the injection pump, and is beneficial to the miniaturization of the portable subcutaneous injection pump.

[0005] In order to achieve the above object, the utility model provides a portable hypodermic injection pump medicine storage injection device, portable hypodermic injection pump is used to inject medicine to the patient's body, portable hypodermic injection pump medicine storage injection device includes: the medicine storage chamber for containing liquid medicine, and injection assembly is used to inject the liquid medicine in the medicine storage chamber into the body, the injection assembly and medicine storage chamber are connected through the connecting hose, the injection assembly includes: the guide steel needle, one end has the needle tip, one end has the needle handle, the indwelling hose has the soft needle seat, the indwelling hose is sleeved on the outside of the guide steel needle, the needle tip of the guide steel needle is worn out the end surface of the indwelling hose, and the guide pipe is arranged between the indwelling hose and the guide steel needle, the guide cylinder has the guide cylinder seat, the fixed seat is used for fixing the guide cylinder and the indwelling hose, and the fixed seat includes the inner fixed seat and the outer fixed seat of inner and outer sleeve, and the sealing gasket is arranged in the bottom of the inner fixed seat and is located in the outer fixed seat, wherein the medicine storage chamber and the fixed seat are all arranged in the shell, the guide cylinder seat and the soft needle seat are arranged in the outer fixed seat and are sleeved on the top of the inner fixed seat, the end of the indwelling hose away from the soft needle seat is worn out the outer fixed seat and is located on the outside of the shell, the guide steel needle is sequentially worn out the shell through the sealing gasket, the inner fixed seat, the guide cylinder and the indwelling hose, the liquid inlet hole that is communicated with each other is formed on the inner fixed seat and the outer fixed seat, and the liquid inlet hole is communicated with the inner chamber of the connecting hose.

[0006] Further, the guide cylinder is sleeved on the outside of the guide steel needle in the inner chamber bottom of the inner fixed seat, one end of the guide cylinder has the guide cylinder seat, and the guide cylinder seat is located between the sealing gasket and the inner fixed seat.

[0007] Further, the bottom of the guide cylinder seat is circular flake structure, the center is upwardly raised to form the trumpet-shaped connecting part of the lower big and the upper small, the cylinder body of the guide cylinder is sleeved on the outside of the steel needle.

[0008] Further, the accommodating cavity that is adapted to the base is formed in the inner fixed seat to accommodate and fix the base, the through hole that is arranged along the axis of the guide seat is formed on the guide seat for the guide steel needle to pass through, and the through hole is communicated with the accommodating cavity and is coaxially arranged.

[0009] Further, the guide cylinder seat and the soft needle seat are trumpet-shaped, and the inner chambers of the guide cylinder seat and the soft needle seat are trumpet-shaped.

[0010] Further, the top of the inner fixed seat is provided with the mounting part of the upper small and the lower big conical frustum that is adapted to the inner chamber of the guide cylinder seat, the inner surface of the guide cylinder seat is crimped on the outer surface of the mounting part, the inner surface of the soft needle seat is crimped on the outer surface of the guide cylinder seat, and the outer surface of the soft needle seat is abutted with the inner wall of the outer fixed seat.

[0011] Further, a connecting disc is arranged at the connecting position of the needle handle and the needle stem, so that the guide steel needle is detachably clamped on the shell of the portable subcutaneous injection pump medicine storage injection device.

[0012] Further, a medicine inlet joint for connecting with the connecting hose 3 is arranged on one side of the outer fixing base, and the medicine inlet joint is coaxially arranged with the medicine inlet hole, and the inner cavity of the medicine inlet joint is gradually reduced from outside to inside to form a horn shape, and the connecting hose is connected with the medicine inlet hole by being inserted into the inner cavity of the joint.

[0013] Further, a medicine outlet hole is arranged at one end of the medicine storage chamber, a medicine outlet joint is arranged on the medicine outlet hole, the connecting hose is connected with the medicine outlet joint, the inner cavity of the connecting hose is connected with the medicine outlet hole, and a medicine pushing device is arranged in the medicine storage chamber.

[0014] Compared with the prior art, the portable subcutaneous injection pump medicine storage injection device has the following technical effects:

[0015] 1. The portable subcutaneous injection pump medicine storage injection device has compact structure and reasonable overall design, the medicine storage chamber and the injection assembly are connected to replace the traditional syringe, and the device can be used by opening the package without the need of connecting an additional syringe, so that the operation is simple, the use is convenient, and a basis is provided for rapid medicine injection of patients.

[0016] 2. The injection assembly of the portable subcutaneous injection pump medicine storage injection device fixes the indwelling hose through the inner fixing base and the outer fixing base, the guide steel needle is inserted into the indwelling hose, the inner and outer sleeve structure fully utilizes the space, the structure is compact, and the miniaturization of the injection pump is facilitated.

[0017] 3. The portable subcutaneous injection pump medicine storage injection device is provided with the metal guide seat in the inner fixing base and the metal guide cylinder between the outer side of the inner fixing base and the indwelling hose, so that the guide steel needle can be accurately inserted into the indwelling hose during assembly, the guide steel needle is prevented from being pierced into the inner fixing base to cause damage of the needle tip, the needle tip is prevented from piercing the indwelling hose to cause product scrapping, the product quality is improved, and the stability of the product quality is ensured. DETAILED DESCRIPTION

[0018] The drawings constituting a part of this specification, for further understanding of the utility model, show the preferred embodiment of the utility model, and are used together with the specification to explain the principle of the utility model. In the drawings:

[0019] Figure 1is a schematic perspective view of the portable subcutaneous injection pump medicine storage injection device according to one preferred embodiment of the present application;

[0020] Figure 2 is a schematic sectional view of the injection assembly of the portable subcutaneous injection pump medicine storage injection device of the present application;

[0021] Figure 3 is a schematic view of the connection relationship between the injection assembly and the shell of the present application.

[0022] The meanings represented by the reference signs in the drawings are as follows: 1, medicine storage chamber; 2, injection assembly, 21, guide steel needle, 22, indwelling hose, 23, guide tube, 231, tube body of guide tube, 232, guide tube seat, 24, fixing seat, 241, outer fixing seat, 242, inner fixing seat, 2421, mounting portion, 25, medicine inlet connector, 26, sealing plate, 27, medicine inlet hole, 28, needle handle, 29, guide seat, 291, base, 292, guide sleeve; 3, connecting hose, 4, connecting disc, 5, shell, 51, bottom shell, 52, cover plate; 6, fixing cap; 7, mounting seat; 8, containing cavity, 9, medicine outlet connector. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways limited and covered by the claims.

[0024] It should be noted that the terms used in the present application are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used in the present application, unless the context clearly indicates otherwise, the singular form is intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the present application, they indicate the presence of a feature, device, component and / or combination thereof.

[0025] In the description of the present application, it should be understood that the terms "bottom", "top", "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] Moreover, it needs to be explained that unless there is an explicit provision and limitation, the terms "mount", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] The portable subcutaneous injection pump medicine storage injection device is used for medicine storage of the portable subcutaneous injection pump and injection of medicine into the patient's body under the action of the medicine pushing device. The portable subcutaneous injection pump in the application is used for injecting medicine into the patient's body. The injection pump has a shell. The shell is provided with a medicine pushing device, a driving device for driving the medicine pushing device, and a power supply module and a control module for supplying power to the driving device. The medicine pushing device, the driving device, the power supply module, the control module and the communication module are all used in the existing injection pump, such as the low-residual micro pump liquid injection device (public number CN118079136A) applied by the patent applicant of the utility model. The specific structure of the above components / devices will not be described here.

[0028] Embodiment: as shown in Figure 1 , 2 and Figure 3 , the portable subcutaneous injection pump medicine storage injection device provided by the embodiment comprises a medicine storage chamber 1 and an injection assembly 2. The injection assembly 2 is used for injecting the liquid medicine in the medicine storage chamber 1 into the body. The injection assembly 2 and the medicine storage chamber 1 are connected by a connecting hose 3. The medicine storage chamber 1 is used for containing liquid medicine. The medicine storage chamber 1 is provided with a medicine pushing device. Under the pushing action of the medicine pushing device, the liquid medicine in the medicine storage chamber 1 enters the injection assembly 2 through the connecting hose 3. The main bodies of the medicine storage chamber 1 and the injection assembly 2 are arranged in the shell 5 of the portable subcutaneous injection pump. The combination of the medicine storage chamber 1 and the injection assembly 2 placed in the shell 5 of the injection pump is beneficial to the miniaturization of the injection pump. The shell 5 of the injection pump is composed of a bottom shell 52 with one end open and one end closed and a cover plate 51. The cover plate 51 is arranged at the opening of the bottom shell 52 to seal the bottom shell 51. The bottom shell 52 and the cover plate 51 are both plastic parts, and the two are connected by buckling. An installation seat 7 for installing the injection assembly 2 is arranged on the inner surface of the bottom plate of the bottom shell 52. A fixing cap 6 is arranged on the cover plate 51 opposite the installation seat 7. The injection assembly 2 is fixed by the cooperation of the installation seat 7 and the fixing cap 6, which is simple to assemble and easy to implement.

[0029] The structure of the injection assembly of the embodiment is as follows: as shown in Figure 2As shown, the injection assembly 2 comprises a retention tube 22, a guide tube 23, a fixing seat 24 and a sealing gasket 26. One end of the guide steel needle 21 has a needle tip, and the other end has a needle handle 28. The needle handle 28 is designed to facilitate the insertion of the guide steel needle 21 into the patient's subcutaneous tissue to enter the retention tube 22, and also facilitates the removal of the guide steel needle 21 after insertion. One end of the retention tube 22 has a soft needle seat 221, which is trumpet-shaped, and the inside of which is provided with a trumpet-shaped inner cavity. The trumpet-shaped large mouth of the soft needle seat 221 faces away from the end of the tube body of the retention tube. The tube body of the retention tube 22 is sleeved outside the guide steel needle 21. The needle tip of the guide steel needle 21 penetrates the end face of the tube body of the retention tube 22 and is located outside the cover plate 51 of the shell 5. A guide tube 23 is provided between the retention tube 22 and the guide steel needle 21. The guide tube 23 has a guide tube seat 232. The fixing seat 24 is used to fix the guide tube 23 and the retention tube 22. In this embodiment, the fixing seat 24 comprises an inner fixing seat 242 and an outer fixing seat 241 which are nested inside and outside. A stepped cavity 8 is formed in the center of the outer fixing seat 241. The large cavity of the cavity 8 is adapted to the mounting seat 7. The mounting seat 7 is stepped, with a small upper cavity and a large lower cavity. The small cavity is adapted to the inner fixing seat 242. The inner fixing seat 242 is arranged in the small cavity of the cavity 8. The opening of the cavity 8 of the outer fixing seat 241 faces downward. The outer fixing seat 241 is sleeved on the top of the mounting seat 7. The sealing gasket 26 is arranged at the bottom of the inner fixing seat 242 and is located in the outer fixing seat 241, that is, the sealing gasket 26 is located between the top surface of the mounting seat 7 and the bottom surface of the inner fixing seat 242, thereby sealing the bottom opening of the cavity 8. The sealing gasket 26 is a rubber gasket. The outer fixing seat 241 is located in the fixing cap 6, thereby limiting the outer fixing seat 241. The bottom surface of the outer fixing seat 241 abuts against the mounting seat 7. The guide tube 23 is a metal part, which supports the retention tube 22 and also has a guiding function. During assembly, when the guide steel needle 21 is inserted, the guide steel needle 21 is prevented from tilting and piercing the retention tube, thereby causing product rejection and ensuring the quality stability of the product. A cavity 8 adapted to the base 291 is formed in the inner fixing seat 242 to accommodate and fix the base 291. A through hole for the guide steel needle is formed on the guide seat 29 along the axis of the guide seat 29. The through hole is in communication with the cavity 8 and is coaxially arranged. The guide tube seat 232 and the soft needle seat 221 are trumpet-shaped, and the inside of each is provided with a trumpet-shaped inner cavity. A through hole coaxial with the inner fixing seat 242 for the guide steel needle is arranged on the inner fixing seat 242. The bottom end of the through hole is trumpet-shaped. This design facilitates installation and the passage of the guide steel needle 21, thereby reducing assembly difficulty.

[0030] In the embodiment, the inner fixing seat 242 is provided with an upper small and lower large conical platform-shaped mounting portion 2421 at the top, which is matched with the inner cavity of the guide tube seat 232. The guide tube seat 232 is in a trumpet shape and is internally provided with an inner cavity in a trumpet shape. The inner surface of the guide tube seat 232 is crimped on the outer surface of the mounting portion 2421. The inner surface of the soft needle seat 221 is crimped on the outer surface of the guide tube seat 232. The outer surface of the soft needle seat 221 abuts against the inner wall of the outer fixing seat 221. The guide tube seat 232 and the soft needle seat 221 are arranged in the outer fixing seat 241 and are sleeved on the top of the inner fixing seat 242. The tube body 231 of the guide tube is located between the needle stem of the guide steel needle 21 and the tube body of the retention soft tube and has a length smaller than that of the tube body of the retention soft tube. The end of the retention soft tube 22 away from the soft needle seat 221 penetrates through the outer fixing seat 241 and is located outside the cover plate 52 of the shell 5. The guide steel needle 21 penetrates through the sealing gasket 26, the inner fixing seat 242, the guide tube 23 and the retention soft tube 22 in sequence and extends out of the cover plate 52 of the shell 5.

[0031] In the embodiment, the inner fixing seat 242 is provided with an upper small and lower large conical platform-shaped mounting portion 2421 at the top, which is matched with the inner cavity of the guide tube seat 232. The guide tube seat 232 is in a trumpet shape and is internally provided with an inner cavity in a trumpet shape. The inner surface of the guide tube seat 232 is crimped on the outer surface of the mounting portion 2421. The inner surface of the soft needle seat 221 is crimped on the outer surface of the guide tube seat 232. The outer surface of the soft needle seat 221 abuts against the inner wall of the outer fixing seat 221. The guide tube seat 232 and the soft needle seat 221 are arranged in the outer fixing seat 241 and are sleeved on the top of the inner fixing seat 242. The tube body 231 of the guide tube is located between the needle stem of the guide steel needle 21 and the tube body of the retention soft tube and has a length smaller than that of the tube body of the retention soft tube. The end of the retention soft tube 22 away from the soft needle seat 221 penetrates through the outer fixing seat 241 and is located outside the cover plate 52 of the shell 5. The guide steel needle 21 penetrates through the sealing gasket 26, the inner fixing seat 242, the guide tube 23 and the retention soft tube 22 in sequence and extends out of the cover plate 52 of the shell 5.

[0032] In order to prevent the guide steel needle 21 from being eccentrically pierced into the inner fixing seat 242 after piercing the sealing gasket 26 during the assembly process, affecting the smooth assembly, or even causing damage to the needle tip, a guide seat 29 is arranged on the inner cavity bottom of the inner fixing seat 242 in the embodiment, which is sleeved on the outer side of the guide steel needle 21. The guide seat 29 is a metal piece. One end of the guide seat 29 is provided with a base 291, which is located between the sealing gasket 26 and the inner fixing seat 242. The bottom of the base 291 is in a circular sheet shape structure. The center is upwardly raised to form a lower large and upper small trumpet-shaped connecting portion. The connecting portion is fixedly connected with a guide sleeve 292 of the guide seat 29. The guide sleeve 292 is sleeved on the outer side of the needle stem of the guide steel needle 21.

[0033] In order to facilitate the connection of the needle handle 28 and the shell 5, and also facilitate the separation of the two, a connecting disc 4 is arranged at the connecting place of the needle handle 28 and the needle stem for guiding the steel needle 21, so that the steel needle 21 can be detachably clamped on the shell 5 of the portable subcutaneous injection pump medicine storage injection device. Specifically, a clamping groove matched with the connecting disc is arranged on the bottom plate of the bottom shell 52, and the connecting disc 4 is clamped in the clamping groove. The connecting disc 4 and the bottom shell 52 are both plastic products.

[0034] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A portable subcutaneous injection pump for storing and injecting medication, characterized in that, The portable subcutaneous injection pump medicine storage injection device comprises: a medicine storage chamber for containing medicine liquid; and an injection assembly for injecting the medicine liquid in the medicine storage chamber into the body, the injection assembly and the medicine storage chamber being connected through a connecting hose; the injection assembly comprises: a guide steel needle having a needle tip at one end and a needle handle at the other end; a remaining hose having a soft needle seat at one end, the remaining hose being sleeved outside the guide steel needle, the needle tip of the guide steel needle penetrating through the end surface of the remaining hose, a guide tube being arranged between the remaining hose and the guide steel needle, the guide tube having a guide tube seat; a fixing seat for fixing the guide tube and the remaining hose, the fixing seat comprising an inner fixing seat and an outer fixing seat which are sleeved with each other; and a sealing gasket arranged at the bottom of the inner fixing seat and located in the outer fixing seat; wherein the medicine storage chamber and the fixing seat are arranged in a shell, the guide tube seat and the soft needle seat are arranged in the outer fixing seat and sleeved on the top of the inner fixing seat, the end of the remaining hose away from the soft needle seat penetrates through the outer fixing seat and is located outside the shell, the guide steel needle penetrates through the sealing gasket, the inner fixing seat, the guide tube and the remaining hose in sequence and extends out of the shell, the inner and outer fixing seats are both provided with medicine inlet holes which are in communication with each other, and the medicine inlet holes are in communication with the inner cavity of the connecting hose.

2. The portable subcutaneous injection pump and reservoir injection device of claim 1, wherein, A guide seat sleeved outside the guide steel needle is arranged at the bottom of the inner cavity of the inner fixing seat, and the guide seat has a base at one end, the base being located between the sealing gasket and the inner fixing seat.

3. The portable subcutaneous injection pump and reservoir injection device of claim 2, wherein, The bottom of the base is in a circular sheet structure, the center of which is upwardly raised to form a lower-to-upper horn-shaped connecting part which is fixedly connected with the guide sleeve of the guide seat, and the guide sleeve of the guide seat is sleeved outside the steel needle.

4. The portable subcutaneous injection pump and reservoir injection device of claim 3, wherein, An accommodating cavity adapted to the base is arranged in the inner fixing seat to accommodate and fix the base, and a through hole for the guide steel needle to penetrate through is arranged on the guide seat along the axis of the guide seat, the through hole being in communication with the accommodating cavity and coaxially arranged.

5. The portable subcutaneous injection pump and reservoir device of claim 1, wherein, The guide tube seat and the soft needle seat are both in a horn shape, and both of them are provided with horn-shaped inner cavities.

6. The portable subcutaneous injection pump and reservoir injection device of claim 5, wherein, The top of the inner fixing seat is provided with a conical frustum-shaped mounting part which is adapted to the inner cavity of the guide tube seat, the inner surface of the guide tube seat being crimped on the outer surface of the mounting part, the inner surface of the soft needle seat being crimped on the outer surface of the guide tube seat, and the outer surface of the soft needle seat being in abutment with the inner wall of the outer fixing seat.

7. The portable subcutaneous injection pump and reservoir device of claim 1, wherein, A connecting disc is arranged at the connecting part of the needle handle and the needle stem of the guide steel needle, so that the guide steel needle is detachably clamped on the shell of the portable subcutaneous injection pump medicine storage injection device.

8. The portable subcutaneous injection pump and reservoir device of claim 1, wherein, A medicine inlet joint for connecting with the connecting hose is arranged on one side of the outer fixing seat, the medicine inlet joint being coaxially arranged with the medicine inlet hole, the inner cavity of the medicine inlet joint gradually reducing from outside to inside to form a horn shape, and the connecting hose is inserted into the inner cavity of the joint to be connected with the medicine inlet hole.

9. The portable subcutaneous injection pump and reservoir device of claim 1, wherein, A medicine outlet joint is arranged on the medicine outlet hole at one end of the medicine storage chamber, the connecting hose being connected with the medicine outlet joint, the inner cavity of the connecting hose being connected with the medicine outlet hole, and a medicine pushing device is arranged in the medicine storage chamber.

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